* {
    padding: 0;
    margin: 0;
    font-family: " Helvetica,sans-serif,STHeiTi";
}
body {
    font-size: 12px;
}
a {
    color: inherit;
    text-decoration: none;
}
li {
    list-style: none;
}
.clearfix {
    zoom: 1;
}
.clearfix::after {
    content: "";
    display: block;
    clear: both;
}

.icon {
    width: 1em; height: 1em;
    vertical-align: -0.15em;
    fill: currentColor;
    overflow: hidden;
 }